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1.
J Adv Nurs ; 79(12): 4842-4849, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37391944

RESUMEN

OBJECTIVE: The objective of this study was to offer further evidence of the utility of metabolic monitoring in early recognition of sepsis. Metabolic derangement in sepsis is of increasing interest. Sepsis was redefined as a dysregulated host response to infection, and studies have since emerged advising that disrupted metabolic pathways in sepsis may interfere with the host's ability to convert oxygen to useable energy. Indirect calorimetry (IC) is a metabolic monitoring technology that measures oxygen consumption (V02) and resting energy expenditure (REE). IC offers clinically important, specific information in terms of patient's metabolic state and has been shown to differentiate patients with sepsis from those without. Additionally, IC is more specific than predictive equations used as the established standard for clinical nutrition. RESEARCH METHODS AND PROCEDURES: Data for this retrospective descriptive study were obtained from chart review of records of critically ill patients who received metabolic monitoring while under the care of the nutrition support team. Data were retrieved from January through March of 2020. The cases included were from January 2018 through January 2020. Variables included key demographics, sepsis diagnosis and specific metabolic variables of cellular respiration and energy expenditure. RESULTS: For this all-male sample (N = 56), mean age was 56 years (±17.5). Significant differences were noted in V02 between the two groups of cases (sepsis and non-sepsis); (p = .026, Cohen's d = 0.618); and REE (p = .032, Cohen's d = 0.607). A strong association was found between V02 and sepsis (Eta 0.981). REE as measured by IC was statistically more specific than predictive equation (p < .001, Cohen's d = 0.527). CONCLUSIONS: VO2 and REE were significantly altered in subjects with sepsis in this study, demonstrating that IC may be a useful tool in identifying sepsis. This study was based on an earlier pilot which yielded similar results. Indirect calorimetry can be easily performed clinically, offering specific metabolic information that can be helpful in the determination of a diagnosis of sepsis. PATIENT OR PUBLIC CONTRIBUTION: No patient or public contribution to this manuscript. The study design, analysis of retrospective data, and manuscript preparation were completed entirely by the authors. IMPLICATIONS FOR CLINICIANS: Sepsis remains one of the number one killers of hospitalized patients globally Current means of identifying sepsis remain overly sensitive and under-specific, making recognition of sepsis challenging for Emergency Clinicians Metabolic monitoring can be done easily in the clinical setting by nurses and respiratory therapists. Metabolic monitoring has the capability of offering further information specific to the identification of sepsis, and to further understanding of the altered metabolic phenotype of patients with sepsis.


Asunto(s)
Metabolismo Energético , Sepsis , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Metabolismo Energético/fisiología , Apoyo Nutricional , Calorimetría Indirecta/métodos , Enfermedad Crítica
2.
J Sci Food Agric ; 101(8): 3376-3385, 2021 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-33226130

RESUMEN

BACKGROUND: In maritime growing environments, blueberry yield often exhibits excessive season-to-season variation, associated with poorly adapted photosynthetic responses to low light conditions. It is therefore necessary to develop methods that stabilise yield while maintaining or improving fruit quality. Here, we placed reflective mulch alongside plants at the early green fruit stage, to test the hypothesis that increasing the available seasonal light integral could enhance blueberry yield. We further determined several quality characteristics to ensure fruit marketability. RESULTS: Placement of mulch alongside plants reflected up to five times more light compared with bare ground, enhancing the amount of light reaching the canopy. This led to an adaptive increase of light saturated maximal photosynthetic rate of mulch-treated plants, resulting in a twofold increase in yield compared with control plants. Analysis of fruit quality characteristics showed that total soluble solids, sugars and organic acids were similar between treatments. Likewise, antioxidant capacity, total anthocyanin content and the content of individual anthocyanins did not change in response to reflective mulch treatment. CONCLUSIONS: The use of reflective mulch should be explored by industry as a cost-effective method for enhancing blueberry yield while maintaining fruit quality in maritime environments. © 2020 Society of Chemical Industry.


Asunto(s)
Frutas/química , Antocianinas/análisis , Antioxidantes/análisis , Arándanos Azules (Planta)/química , Arándanos Azules (Planta)/crecimiento & desarrollo , Clima , Frutas/crecimiento & desarrollo , Fotosíntesis , Estaciones del Año , Azúcares/análisis
3.
J Neuroeng Rehabil ; 17(1): 123, 2020 09 10.
Artículo en Inglés | MEDLINE | ID: mdl-32912215

RESUMEN

BACKGROUND: Wearable powered exoskeletons are a new and emerging technology developed to provide sensory-guided motorized lower limb assistance enabling intensive task specific locomotor training utilizing typical lower limb movement patterns for persons with gait impairments. To ensure that devices meet end-user needs it is important to understand and incorporate end-users perspectives, however research in this area is extremely limited in the post-stroke population. The purpose of this study was to explore in-depth, end-users perspectives, persons with stroke and physiotherapists, following a single-use session with a H2 exoskeleton. METHODS: We used a qualitative interpretive description approach utilizing semi-structured face to face interviews, with persons post-stroke and physiotherapists, following a 1.5 h session with a H2 exoskeleton. RESULTS: Five persons post-stroke and 6 physiotherapists volunteered to participate in the study. Both participant groups provided insightful comments on their experience with the exoskeleton. Four themes were developed from the persons with stroke participant data: (1) Adopting technology; (2) Device concerns; (3) Developing walking ability; and, (4) Integrating exoskeleton use. Five themes were developed from the physiotherapist participant data: (1) Developer-user collaboration; (2) Device specific concerns; (3) Device programming; (4) Patient characteristics requiring consideration; and, (5) Indications for use. CONCLUSIONS: This study provides an interpretive understanding of end-users perspectives, persons with stroke and neurological physiotherapists, following a single-use experience with a H2 exoskeleton. The findings from both stakeholder groups overlap such that four over-arching concepts were identified including: (i) Stakeholder participation; (ii) Augmentation vs. autonomous robot; (iii) Exoskeleton usability; and (iv) Device specific concerns. The end users provided valuable perspectives on the use and design of the H2 exoskeleton, identifying needs specific to post-stroke gait rehabilitation, the need for a robust evidence base, whilst also highlighting that there is significant interest in this technology throughout the continuum of stroke rehabilitation.


Asunto(s)
Dispositivo Exoesqueleto , Satisfacción del Paciente , Fisioterapeutas , Rehabilitación de Accidente Cerebrovascular/instrumentación , Adulto , Anciano , Femenino , Trastornos Neurológicos de la Marcha/etiología , Trastornos Neurológicos de la Marcha/rehabilitación , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Accidente Cerebrovascular/complicaciones
4.
J Exp Bot ; 69(12): 3069-3080, 2018 05 25.
Artículo en Inglés | MEDLINE | ID: mdl-29590429

RESUMEN

Published evidence indicates that nearly 60% of blueberry-producing countries experience yield instability. Yield is a complex trait determined by genetic and environmental factors. Here, using physiological and biochemical approaches, we tested the hypothesis that yield instability results from year-to-year environmental variation that limits carbon assimilation, storage and partitioning. The data indicate that fruit development depends primarily on the daily production of non-structural carbohydrates by leaves, and there is no accumulation of a starch buffer to allow continuous ripening under conditions limiting for photosynthesis. Photosynthesis was saturated at moderate light irradiance and this was mainly due to stomatal and biochemical limitations. In a dynamic light environment, photosynthesis was further limited by slow stomatal response to increasing light. Finally, labelling with 13CO2 at specific stages of fruit development revealed a relatively even distribution of newly assimilated carbon between stems, roots and fruits, suggesting that the fruit is not a strong sink. We conclude that a significant component of yield variability results from limitations in photosynthetic efficiency that are compounded by an inability to accumulate starch reserves in blueberry storage tissues in a typical northern European environment. This work informs techniques for improving agronomic management and indicates key traits required for yield stability in such environments.


Asunto(s)
Arándanos Azules (Planta)/metabolismo , Frutas/crecimiento & desarrollo , Fotosíntesis , Arándanos Azules (Planta)/crecimiento & desarrollo , Frutas/metabolismo , Hojas de la Planta/crecimiento & desarrollo , Hojas de la Planta/metabolismo , Escocia
5.
BMC Genet ; 19(1): 59, 2018 08 15.
Artículo en Inglés | MEDLINE | ID: mdl-30111279

RESUMEN

BACKGROUND: The changing climate is altering timing of key fruit ripening processes and increasing the occurrence of fruit defects. To improve our understanding of the genetic control of raspberry fruit development an enhanced genetic linkage map was developed and used to examine ripening phenotypic data. RESULTS: In this study we developed an enhanced genetic linkage map for the raspberry cvs. Glen Moy x Latham reference mapping population using genotyping by sequencing (GbS). Alignment to a newly sequenced draft reference genome of red raspberry, cultivar (cv.) Glen Moy, identified 8019 single nucleotide polymorphisms (SNPs). After stringent filtering to take account of read coverage over all the progeny individuals, association with a single chromosome, heterozygosity and marker regression mapping, 2348 high confidence SNPs were retained and integrated with an existing raspberry genetic map. The linkage map contained many more SNPs segregating in Latham than in Glen Moy. This caused difficulties in quantitative trait loci (QTL) mapping with standard software and a novel analysis based on a hidden Markov model was used to improve the mapping. QTL mapping using the newly generated dense genetic map not only corroborated previously identified genetic locations but also provided additional genetic elements controlling fruit ripening in raspberry. CONCLUSION: The high-density GbS map located the QTL peaks more precisely than in earlier studies, aligned the QTLs with Glen Moy genome scaffolds, narrowed the range of potential candidate genes to these regions that can be utilised in other populations or in gene expression studies to confirm their role and increased the repertoire of markers available to understand the genetic control of fruit ripening traits.


Asunto(s)
Frutas/genética , Ligamiento Genético , Organogénesis de las Plantas/genética , Polimorfismo de Nucleótido Simple , Rubus/genética , Mapeo Cromosómico , Frutas/crecimiento & desarrollo , Sitios de Carácter Cuantitativo , Rubus/crecimiento & desarrollo
6.
Somatosens Mot Res ; 35(2): 148-152, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-30299226

RESUMEN

A cerebrovascular accident, otherwise known as stroke, has the potential to damage multiple areas within the brain affecting descending motor control via a multitude of pathways resulting in a wide variety of movement problems. The cortico-reticulospinal system, one of the largest motor systems, is frequently affected, compromising its output, resulting in postural control deficits. The identification of clinically relevant instruments and scales to document and evaluate recovery in post-stroke patients is vital. However, the availability of such measures and scales which take into consideration the role of postural control as an integral component of functional movement performance are scarce. This paper will critically discuss the importance of integrating current neuroscience and motor control knowledge in order to better understand and describe the clinical presentation of persons post-stroke such that the effectiveness of stroke rehabilitation can be appropriately measured.


Asunto(s)
Corteza Cerebral/fisiología , Trastornos del Movimiento/etiología , Vías Nerviosas/fisiología , Médula Espinal/fisiología , Rehabilitación de Accidente Cerebrovascular/métodos , Accidente Cerebrovascular/complicaciones , Animales , Humanos , Trastornos del Movimiento/rehabilitación
7.
Theor Appl Genet ; 130(3): 557-572, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-27942774

RESUMEN

KEY MESSAGE: QTL mapping identifies a range of underlying and unrelated genes with apparent roles in raspberry fruit ripening and softening that show characteristic developing fruit expression profiles. Fruit softening is an important agronomical trait that involves a complex interaction of plant cell processes. We have used both qualitative and quantitative scoring of fruit firmness, length, mass, and resistance to applied force to identify QTL in a raspberry mapping population. QTLs were located primarily on linkage group (LG) 3 with other significant loci on LG 1 and LG 5 and showed mostly additive effects between the two parents. The expression of key genes that underlie these QTLs with roles in cell-wall solubility, water uptake, polyamine synthesis, transcription, and cell respiration was tested across five stages of fruit development, from immature green to red ripe fruit, using real-time RT-qPCR. Gene expression patterns showed variable expression patterns across fruit development with a highly significant positive and negative correlation between genes, supporting precise regulation of expression of different cell processes throughout raspberry fruit development. Variable timing in expression was also found in some genes at different fruit development stages between soft and firm cultivars. Multiple processes have a role to play in fruit softening and this will require development of multiple marker combinations to genes that characterise raspberry fruit softening.


Asunto(s)
Frutas/fisiología , Genes de Plantas , Sitios de Carácter Cuantitativo , Rubus/genética , Mapeo Cromosómico , Regulación de la Expresión Génica de las Plantas , Ligamiento Genético , Fenotipo , Rubus/fisiología
8.
J Cell Biochem ; 115(9): 1539-48, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24633904

RESUMEN

Fibrosis is a chronic disease characterized by an excessive deposition of scar tissue in the affected organs. A central mediator of this process is transforming growth factor-ß (TGF-ß), which stimulates the production of extracellular matrix proteins such as collagens. MicroRNAs (miRNAs) have been implicated in both fibrosis as well as in TGF-ß signaling, but the extent of their regulation has not been fully defined. A functional screen was conducted using a library of miRNA inhibitors to identify miRNAs that affect TGF-ß-induced type I collagen expression, a key event in the development of fibrosis. The inhibition of one miRNA in particular, miR-27b, caused a significant increase in type I collagen expression. We found that miR-27b directly targets Gremlin 1 by binding to its 3'-UTR, reducing its mRNA levels. TGF-ß signaling decreased miR-27b expression and caused a corresponding increase in Gremlin 1 levels, suggesting that TGF-ß regulates Gremlin 1 expression in part by modulating miR-27b expression. Reducing Gremlin 1 levels by either siRNA-mediated gene silencing or by using the miR-27b mimic inhibited the expression of several genes known to be involved in fibrosis, while increasing Gremlin 1 levels by the addition of either recombinant protein or the miR-27b inhibitor enhanced the expression of these genes. In summary, we have demonstrated that miR-27b targets Gremlin 1, and that this regulation likely represents an important control point in fibrotic pathways.


Asunto(s)
Células Epiteliales/citología , Fibroblastos/citología , Péptidos y Proteínas de Señalización Intercelular/genética , Pulmón/citología , MicroARNs/genética , Regiones no Traducidas 3' , Línea Celular , Proliferación Celular , Colágeno Tipo I/metabolismo , Regulación de la Expresión Génica , Humanos , Péptidos y Proteínas de Señalización Intercelular/metabolismo , MicroARNs/metabolismo , Transducción de Señal/efectos de los fármacos , Factor de Crecimiento Transformador beta/farmacología
9.
Clin Nurse Spec ; 38(4): 171-174, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38889057

RESUMEN

ABSTRACT: In 1991, sepsis was first defined by the Society of Critical Care Medicine as the systemic inflammatory response syndrome, in the presence of infection. Systemic inflammatory response syndrome is an adaptive host response to infection, as well as to other insults like trauma and stress. Research pertaining to sepsis was guided by this adaptive definition for 25 years. After established guidelines for sepsis management were challenged in 2014, sepsis was redefined in 2016 as a dysregulated host response to infection. However, there still remains no consensus on which immunologic or metabolic mechanisms have become dysregulated. We sought to examine sepsis literature published after the 2016 consensus definition and compare it to the original systemic inflammatory response syndrome paradigm proposed in 1991. The purpose of this intensive analysis was to recommend a new sepsis archetype, with consideration to dysregulated immunologic and metabolic mechanisms that have recently been identified in sepsis. Nurses and other clinicians must shift their thought paradigm toward an evidence-based dysregulated model, in order to improve on sepsis recognition and management.


Asunto(s)
Sepsis , Humanos , Sepsis/enfermería , Sepsis/terapia , Síndrome de Respuesta Inflamatoria Sistémica , Enfermería Basada en la Evidencia
10.
Clin Nurs Res ; 33(5): 301-308, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38454542

RESUMEN

Significant morbidity and mortality from COVID-19-related illnesses have been observed among people of color within the United States. While theories involving healthcare inequity and political division have emerged to explain this observation, the role of chronic stress and inflammation is also being explored. Toxic stress is experienced disproportionately by race, ethnicity, and socioeconomic status and increases frailty and vulnerability to diseases such as COVID-19. C-reactive protein (CRP) is a biomarker associated with the inflammatory response that is typically elevated due to exposure to acute or chronic traumatic stress, as well as COVID-19. This study explored the relationship between CRP and Hispanic/non-Hispanic ethnicity among adults hospitalized with COVID-19 via a secondary analysis of retrospective electronic health record (EHR) data collected from a community healthcare system in Southern California. A total of 1,744 cases representing hospitalized adults with COVID-19 were reviewed. Data were extracted from the EHR to reflect demographics, medical diagnoses, medications, CRP, and comorbidity burden. Frequencies, percentages, and measures of central tendency were assessed to understand the distribution of data. Associations were conducted using Pearson's r and the chi-square test of independence. Differences between groups were examined via independent samples t-tests. The sample was 52% Hispanic, 56% male, and the mean age was 62 years (SD = 16.1). The mean age of Hispanic cases was younger than non-Hispanic cases (p < .001, η = 0.289). Serum CRP was significantly higher in the Hispanic cases, with a high degree of association (p < .001, η = 0.472). In addition, higher CRP levels were significantly associated with the need for mechanical ventilation (p < .001, φc = 0.216). No significant relationships were found between CRP and age, body mass index (BMI), or comorbidity burden. Findings challenge the assumption that the disproportionate morbidity and mortality suffered by the Hispanic population due to COVID-19 was due to age, BMI, or comorbidities such as metabolic syndrome or heart disease. CRP in the Hispanic population should be further investigated to understand its relationship to chronic stress, frailty, and risk for COVID-19 in this population.


Asunto(s)
Proteína C-Reactiva , COVID-19 , Fragilidad , Racismo , Humanos , Masculino , Femenino , Estudios Retrospectivos , Racismo/psicología , Persona de Mediana Edad , Proteína C-Reactiva/análisis , Anciano , California/epidemiología , Hispánicos o Latinos/estadística & datos numéricos , Estrés Psicológico , SARS-CoV-2 , Adulto , Estados Unidos/epidemiología , Hospitalización , Biomarcadores/sangre
11.
Disabil Rehabil ; : 1-12, 2024 Jul 10.
Artículo en Inglés | MEDLINE | ID: mdl-38984750

RESUMEN

PURPOSE: This scoping review aims to describe how Bobath concept is conceptualized, operationalized, and studied in adult neurorehabilitation. METHODS: The Joanna Briggs Institute (JBI) and the Preferred Reporting Items for Scoping Reviews (PRISMA-ScR) guidelines were adopted. Non-scientific and research articles were searched in electronic databases PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Scopus, Web of Science, ScienceDirect, and Physiotherapy Evidence Database (PEDro), with the keywords "Bobath" or "Neurodevelopmental Treatment", published in English, Spanish, and Portuguese, between 2013 and 2023. RESULTS: Of the 78 publications identified, 31 articles addressed the conceptual underpinnings of Bobath concept (seven theoretical papers, seven Delphi/surveys/mixed methods studies, four qualitative studies, one scoping review, 10 letters to the editor, and two editorials), comprising five themes: (a) theoretical principles; (b) clinical principles; (c) clinical reasoning; (d) conceptualizing movement; and, current (e) evidence debate. The revised definition and the Model of Bobath Clinical Practice provide a clarification of the unique aspects of Bobath concept. A new clinical skill was identified beyond facilitation - visuospatial kinesthetic perception - as well as how Bobath experts conceptualize movement, which are all integral to clinical reasoning. CONCLUSIONS: This review provides an updated Bobath clinical framework that gathers the theoretical foundations and clinical practice principles that require careful consideration in the design of future intervention studies.Implications for rehabilitationThis scoping review consolidates the clinical and theoretical principles of contemporary Bobath practice, providing a clear framework for clinicians.The Model of Bobath Clinical Practice (MBCP) framework enables detailed documentation of movement analysis and movement diagnosis, guiding clinical reasoning and interventions.This review identifies fundamental principles and practices to inform future Bobath intervention studies, ensuring their clinical relevance.A framework with specific recommendations has been developed to guide Bobath intervention studies, enhancing the integration of clinical practice, education, and research.

12.
Theor Appl Genet ; 126(1): 33-48, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22890807

RESUMEN

Raspberry volatiles are important for perceptions of sensory quality, mould resistance and some have nutraceutical activities. Twelve raspberry character volatiles were quantified, 11 of them in fruit from two seasons, from plants from the Glen Moy × Latham mapping population growing in both open field and under cover (polytunnels). Effects of season and environment were examined for their impact on the content of α-ionone, α-ionol, ß-ionone, ß-damascenone, linalool, geraniol, benzyl alcohol, (Z)-3-hexenol, acetoin, acetic and hexanoic acids, whilst raspberry ketone was measured in one season. A significant variation was observed in fruit volatiles in all progeny between seasons and method of cultivation. Quantitative trait loci were determined and mapped to six of the seven linkage groups, as were candidate genes in the volatiles pathways.


Asunto(s)
Frutas/genética , Sitios de Carácter Cuantitativo , Estaciones del Año , Ácido Acético/química , Acetoína/farmacología , Monoterpenos Acíclicos , Alquenos/farmacología , Alcohol Bencilo/farmacología , Hidroxitolueno Butilado/farmacología , Caproatos/química , Cromatografía de Gases/métodos , Cruzamientos Genéticos , Ciclohexanos/farmacología , Ambiente , Genes de Plantas , Marcadores Genéticos/genética , Hexanoles/farmacología , Cetonas/química , Modelos Químicos , Modelos Genéticos , Modelos Estadísticos , Monoterpenos/farmacología , Norisoprenoides/farmacología , Gusto/genética , Terpenos/farmacología
13.
Plant Direct ; 7(3): e490, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36937793

RESUMEN

Monitoring plant responses to stress is an ongoing challenge for crop breeders, growers, and agronomists. The measurement of below-ground stress is particularly challenging as plants do not always show visible signs of stress in the above-ground organs, particularly at early stages. Hyperspectral imaging is a technique that could be used to overcome this challenge if associations between plant spectral data and specific stresses can be determined. In this study, three genotypes of red raspberry plants grown under controlled conditions in a glasshouse were subjected to below-ground biotic stresses (root pathogen Phytophthora rubi and root herbivore Otiorhynchus sulcatus) or abiotic stress (soil water availability) and regularly imaged using hyperspectral cameras over this period. Significant differences were observed in plant biophysical traits (canopy height and leaf dry mass) and canopy reflectance spectrum between the three genotypes and the imposed stress treatments. The ratio of reflectance at 469 and 523 nm showed a significant genotype-by-treatment interaction driven by differential genotypic responses to the P. rubi treatment. This indicates that spectral imaging can be used to identify variable plant stress responses in raspberry plants.

14.
J Biol Chem ; 286(42): 36215-27, 2011 Oct 21.
Artículo en Inglés | MEDLINE | ID: mdl-21873430

RESUMEN

Phosphatidylinositol (PI) 3-kinase/Akt signaling plays a critical role in cell proliferation and survival, partly by regulation of FoxO transcription factors. Previous work using global expression profiling indicated that inhibition of PI 3-kinase in proliferating cells led to induction of genes that promote cell cycle arrest and apoptosis. The upstream regulatory regions of these genes had binding sites not only for FoxO, but also for Myc/Max transcription factors. In the present study, we have addressed the role of Myc family members and related E-box-binding proteins in the regulation of these genes. Chromatin immunoprecipitations and RNA interference indicated that transcription was repressed by Max-Mnt-Sin3a-histone deacetylase complexes in proliferating cells. Inhibition of PI 3-kinase led to a loss of Max/Mnt binding and transcriptional induction by MITF and USF1, as well as FoxO. Both MITF and USF1 were activated by glycogen synthase kinase (GSK) 3, with GSK3 phosphorylation sites on USF1 identified as the previously described activating site threonine 153 as well as serine 186. siRNA against MITF as well as against FoxO3a protected cells from apoptosis following PI 3-kinase inhibition. These results define a novel E-box-regulated network that functions coordinately with FoxO to regulate transcription of apoptotic and cell cycle regulatory genes downstream of PI 3-kinase/Akt/GSK3 signaling.


Asunto(s)
Proteínas Reguladoras de la Apoptosis/biosíntesis , Factores de Transcripción Básicos con Cremalleras de Leucinas y Motivos Hélice-Asa-Hélice/metabolismo , Ciclo Celular/fisiología , Factores de Transcripción Forkhead/metabolismo , Regulación de la Expresión Génica/fisiología , Glucógeno Sintasa Quinasa 3/metabolismo , Factor de Transcripción Asociado a Microftalmía/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Proteínas Proto-Oncogénicas c-akt/metabolismo , Transducción de Señal/fisiología , Factores Estimuladores hacia 5'/metabolismo , Proteínas Reguladoras de la Apoptosis/genética , Factores de Transcripción Básicos con Cremalleras de Leucinas y Motivos Hélice-Asa-Hélice/genética , Línea Celular Tumoral , Factores de Transcripción Forkhead/genética , Glucógeno Sintasa Quinasa 3/genética , Humanos , Factor de Transcripción Asociado a Microftalmía/genética , Fosfatidilinositol 3-Quinasas/genética , Fosforilación/fisiología , Proteínas Proto-Oncogénicas c-akt/genética , ARN Interferente Pequeño/genética , Proteínas Represoras/genética , Proteínas Represoras/metabolismo , Complejo Correpresor Histona Desacetilasa y Sin3 , Transcripción Genética/fisiología , Factores Estimuladores hacia 5'/genética
15.
J Infus Nurs ; 45(1): 41-48, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34941607

RESUMEN

The coronavirus disease 2019 (COVID-19) pandemic has tested nurse staffing and other resources necessary for lifesaving treatment. The emergency use authorization in November 2020 of bamlanivimab as monotherapy and casirivimab/imdevimab as combination therapy brought hope to many as an option for outpatients at risk for severe illness. However, logistical concerns were soon revealed, because safe administration requires a location where patients can receive specialized care and monitoring for a period of 2 hours. This type of therapy would normally be offered at an outpatient infusion center. These centers often serve persons who are immunocompromised, and introducing COVID-19-positive individuals could threaten the safety of this population. This article describes the deployment of an emergency department-embedded infusion center set up for the purpose of supporting community members and providers electing for this treatment option.


Asunto(s)
COVID-19 , Anticuerpos Monoclonales , Anticuerpos Monoclonales Humanizados , Anticuerpos Neutralizantes , Servicio de Urgencia en Hospital , Humanos , SARS-CoV-2
16.
Nat Cancer ; 3(8): 927-931, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35788722

RESUMEN

This single-arm pilot study (NCT03329937) evaluated neoadjuvant niraparib antitumor activity and safety in patients with localized HER2-negative, BRCA-mutated breast cancer. Twenty-one patients received niraparib 200 mg once daily in 28-day cycles. After 2 cycles, tumor response (≥30% reduction from baseline) by MRI was 90.5% and 40.0% (6 of 15) of patients who received only niraparib (2-6 cycles) had pathological complete response; no new safety signals were identified. High niraparib intratumoral concentration was observed.


Asunto(s)
Neoplasias de la Mama , Indazoles , Piperidinas , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/genética , Femenino , Humanos , Indazoles/efectos adversos , Terapia Neoadyuvante/efectos adversos , Proyectos Piloto , Piperidinas/efectos adversos
17.
Disabil Rehabil Assist Technol ; 17(7): 840-847, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-32928001

RESUMEN

PURPOSE: Wearable lower body robotic exoskeletons are an emerging technology used in gait rehabilitation to facilitate task-specific overground walking. Despite their proposed utility as a rehabilitation intervention, exoskeletons have not been widely implemented into clinical practice by physiotherapists. This study aims to inform future development of exoskeleton technology through the exploration of physiotherapy student perspectives on the use of the H2 robotic exoskeleton and the implementation of exoskeletons as a therapeutic technology in neurological gait rehabilitation. METHODS: A qualitative descriptive study, including fifteen physiotherapy students, was conducted using three equally sized focus groups. A collaborative data analysis process was employed using the DEPICT model. RESULTS: Five themes were identified during data analysis: developing evidence-informed practice, clinical considerations for exoskeleton use, resource demands, device-specific challenges for implementation, and future development. The results suggest there are several barriers limiting novel clinicians' future use of exoskeletons. CONCLUSION: This study highlights current challenges surrounding exoskeleton implementation into clinical practice and provides direction for future exoskeleton development.Implications for rehabilitationPhysiotherapy students view exoskeletons as a potentially valuable rehabilitation tool once perceived limitations are addressed.This study encourages collaboration between physiotherapists and biomedical engineers for future exoskeleton development.More research is needed to inform treatment parameters and appropriate client criteria to guide exoskeleton use for gait rehabilitation.


Asunto(s)
Dispositivo Exoesqueleto , Trastornos Neurológicos de la Marcha , Humanos , Modalidades de Fisioterapia , Estudiantes , Tecnología
18.
J Biol Chem ; 285(7): 4472-80, 2010 Feb 12.
Artículo en Inglés | MEDLINE | ID: mdl-20018891

RESUMEN

GSK-3 is active in the absence of growth factor stimulation and generally acts to induce apoptosis or inhibit cell proliferation. We previously identified a subset of growth factor-inducible genes that can also be induced in quiescent T98G cells solely by inhibition of GSK-3 in the absence of growth factor stimulation. Computational predictions verified by chromatin immunoprecipitation assays identified NF-kappaB binding sites in the upstream regions of 75% of the genes regulated by GSK-3. p50 bound to most of these sites in quiescent cells, and for one-third of the genes, binding of p65 to the predicted sites increased upon inhibition of GSK-3. The functional role of p65 in gene induction following inhibition of GSK-3 was demonstrated by RNA interference experiments. Furthermore, inhibition of GSK-3 in quiescent cells resulted in activation of IkappaB kinase, leading to phosphorylation and degradation of IkappaB alpha and nuclear translocation of p65 and p50. Taken together, these results indicate that the high levels of GSK-3 activity in quiescent cells repress gene expression by negatively regulating NF-kappaB through inhibition of IkappaB kinase. This inhibition of NF-kappaB is consistent with the role of GSK-3 in the induction of apoptosis or cell cycle arrest in cells deprived of growth factors.


Asunto(s)
Glucógeno Sintasa Quinasa 3/fisiología , FN-kappa B/metabolismo , Sitios de Unión , Línea Celular Tumoral , Núcleo Celular/metabolismo , Inmunoprecipitación de Cromatina , Biología Computacional , Glucógeno Sintasa Quinasa 3/antagonistas & inhibidores , Humanos , Proteínas I-kappa B/genética , Proteínas I-kappa B/metabolismo , Immunoblotting , Indoles/farmacología , Maleimidas/farmacología , FN-kappa B/genética , Subunidad p50 de NF-kappa B/metabolismo , Fosforilación , Factor de Crecimiento Derivado de Plaquetas/farmacología , Unión Proteica/efectos de los fármacos , Transporte de Proteínas/efectos de los fármacos , Interferencia de ARN , ARN Interferente Pequeño/genética , ARN Interferente Pequeño/fisiología , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Factor de Transcripción ReIA/metabolismo
19.
J Biol Chem ; 285(41): 31139-47, 2010 Oct 08.
Artículo en Inglés | MEDLINE | ID: mdl-20682773

RESUMEN

Transcription factor LSF is essential for cell cycle progression, being required for activating expression of the thymidylate synthase (Tyms) gene at the G1/S transition. We previously established that phosphorylation of LSF in early G1 at Ser-291 and Ser-309 inhibits its transcriptional activity and that dephosphorylation later in G1 is required for its reactivation. Here we reveal the role of prolyl cis-trans isomerase Pin1 in activating LSF, by facilitating dephosphorylation at both Ser-291 and Ser-309. We demonstrate that Pin1 binds LSF both in vitro and in vivo. Using coimmunoprecipitation assays, we identify three SP/TP motifs in LSF (at residues Ser-291, Ser-309, and Thr-329) that are required and sufficient for association with Pin1. Co-expression of Pin1 enhances LSF transactivation potential in reporter assays. The Pin1-dependent enhancement of LSF activity requires residue Thr-329 in LSF, requires both the WW and PPiase domains of Pin1, and correlates with hypophosphorylation of LSF at Ser-291 and Ser-309. These findings support a model in which the binding of Pin1 at the Thr-329-Pro-330 motif in LSF permits isomerization by Pin1 of the peptide bonds at the nearby phosphorylated SP motifs (Ser-291 and Ser-309) to the trans configuration, thereby facilitating their dephosphorylation.


Asunto(s)
Proteínas de Unión al ADN/metabolismo , Isomerasa de Peptidilprolil/metabolismo , Factores de Transcripción/metabolismo , Secuencias de Aminoácidos , Animales , Proteínas de Unión al ADN/genética , Ratones , Células 3T3 NIH , Peptidilprolil Isomerasa de Interacción con NIMA , Isomerasa de Peptidilprolil/genética , Fosforilación/fisiología , Estructura Terciaria de Proteína , Factores de Transcripción/genética
20.
Disabil Rehabil ; 43(18): 2621-2631, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-31905043

RESUMEN

PURPOSE: Dance improves physical, psychosocial, and cognitive function, while increasing community participation among community-dwelling individuals post-stroke. Yet little is known about how to structure community-based dance classes to optimize benefits and participation. This study aims to gain stakeholders' perspectives about how to optimally structure community-based dance classes for individuals with chronic stroke. METHODS: A qualitative descriptive approach utilizing focus group methods was implemented. Two focus groups were undertaken with each of three stakeholder groups: persons post-stroke (n = 9), rehabilitation therapists (n = 6), and dance instructors (n = 8). Focus groups were audio-recorded and transcribed verbatim, providing the raw data. Analysis of the focus group transcripts were completed using the DEPICT model of collaborative qualitative analysis. RESULTS: This study identified three main themes/topics requiring consideration when structuring community-based dance programs: the environment, flow of the class, and qualities of the dance instructor. The study findings highlight that the pedagogical skills and teaching philosophy of the dance instructor are integral for a successful dance program, as the dance instructor directly mediates both the environment and flow of classes. CONCLUSION: Recommendations generated from our study can inform the development of community-based dance programs that are practical, optimize health benefits, and meet the needs and interests of people post-stroke.IMPLICATIONS FOR REHABILITATIONDance is an effective way to improve physical, psychosocial, and cognitive function for persons post-stroke while also promoting meaningful social relationships within the community.A dance instructor who is a skilled communicator and is willing to adapt to the needs of the class, is the most important factor for a successful dance class.Creating a safe and inviting environment for a dance program, includes both the physical and emotional aspects of environment facilitating individuals to create connections with others and feel more confident in themselves.The structure of a dance class, based on the abilities, interests, and goals of dancers, should include elements of predictability and variability to keep dancers progressing and motivated, and be two times a week for 3 months lasting 1-2 h.


Asunto(s)
Rehabilitación de Accidente Cerebrovascular , Accidente Cerebrovascular , Adaptación Fisiológica , Grupos Focales , Humanos , Investigación Cualitativa
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